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GND
1 2
R19
20R
D7
MBRS140
GND
D6
BAT48
R20
10K
C16
22nF
D
G
S
Q5
IRF830A
D
G
S
Q6
IRF830A
Vcc
1
HIN
2
LIN
3
COM
4
LO
5
Vs
6
HO
7
VB
8
IC1
IR2106
C11
100nF
O1
1
O2
2
O3
3
O4
4
O5
5
O6
6
O7
7
O8
8
J2
TUBE Connector
72
L3BDIFF8
R16
33R
R18
33R
D3
MUR A16 0
12
C28
470pF 1KV
TOP
BOT
1 2
R23
20R
D10
MBRS140
D9
BAT48
R25
10K
C18
22nF
1 2
C13
1uF
25V
GND
GND
GND
27
L5B
HE A T 6
1 3
L7
RES5
1mH
2 7
L4B
HEAT 7
DCB
0.5W
0.5W
R15
10R
15V/1
12
C14
470pF 1KV
12
C15
8n2 1KV
1 2
R17 10K
R150
0R
GND
1 2
C12
100 nF 63 0V
Tube Current 1
R21
3K3
Tube Current 2
54
L3D DIFF8
R24
N/P
GND
1 8
L3A DIFF8
R151
0R
43
L4C
HEAT 7
6 5
L4D
HEAT7
D8
BAT48
3 4
L5C
HEAT 6
56
L5D
HEAT6
R22
30K
C26
10nF 630V TC356
D4
BZG05C22
D5
BZG05C22
GND
R152
0R
GND
C17
6n8
GND
Tube Voltage difference
HALF BRIDGE
RESONANT CIRCUIT
OUTPUT INDUCTANCE CIRCUITY
DIFFERENT VOLTAGE SENSING
TUBE CURRENTS SENSING
System Modules
Dimmable Light Ballast with Power Factor Correction, Rev. 1
Freescale Semiconductor 29
Figure 4-4. Dimmable Light Ballast — Inverter